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80LowerJig.com: 80% Lowers, Jigs, Build Kits & More!

80% Lower Receivers Compared (2019)

The AR-15 market is utterly flooded with lower receivers: Billet and forged 80% lowers, ultralight polymer receivers, and unique or one-off lowers (like the AR9 or units from DPMS) that cater to specific rounds like 9mm and .308. There are quite a few available on the market, and trying to compare them all – especially if […]

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The 1911: 80% Frames vs. Retail Frames

You might’ve come here from our guide on How to Build a 1911 with an 80% Frame. Or, maybe you’re just here out of curiosity. Either way, this guide compares the 1911’s retail frames to their 80% counterparts. We cover the full-size Government, Commander, and Officer models, DISCLAIMER: We’re not lawyers, and nothing in this […]

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Types of AR-15 Upper Receivers Compared

With so many pre-built uppers out there (and the obvious demand for all kinds of lower receivers) many AR-15 owners and builders don’t give much thought to the type of stripped upper receiver they want for their rifle or pistol. After all, its only purpose is to mount the barrel and house the bolt carrier […]

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What is an 80% Lower Jig?

If you researched how to build an AR-15 from scratch, you’ve probably come across the terms “80 lower receiver” or “80% lower”. These are receiver blanks that you can use to build your own black rifle at home. If you use a receiver blank to build your rifle or pistol, you don’t need to visit […]

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